Home / 397,710.12-596,478.78-131,407.56

Finding the Fourth Proportional to 397,710.12, 596,478.78 and 131,407.56

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Solution

The fourth proportional to 397,710.12, 596,478.78 and 131,407.56 is: 197,082.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,710.12 : 596,478.78 = 131,407.56 : x
  2. Step 2: Convert to fraction form
    397,710.12/596,478.78 = 131,407.56/x
  3. Step 3: Cross multiply
    397,710.12x = 596,478.78 × 131,407.56
  4. Step 4: Simplify right side
    397,710.12x = 78,381,821,071.58
  5. Step 5: Solve for x
    x = 78,381,821,071.58/397,710.12
  6. Step 6: Final answer
    x = 197,082.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.